The stunning actress gets intimate with James Franco in a trailer for their new film Forever Love.

The glamorous pair play a married couple in the movie which is about author CK Williams.

Kunis and Franco give each other a peck on the lips after seemingly enjoying a joke.

As the caption in the trailer says: "When it seems you have it all - but your past won't let you go."

At one point Franco says: "I found a girl to be in love with, all we wanted was to live together, so we did."

The trailer ends with the couple kissing again.

Due to hit cinemas on September 8, the film looks well worth a watch, if just to enjoy some more lovey dovey moments from Franco and Kunis.

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Meanwhile, Mila is expecting her first child with her fiancé Ashton in October and she insists she is embracing her new figure, particularly her bigger boobs.

Speaking in the July issue of Marie Claire magazine, she said of her fuller bust: "They're amazing! They've tripled in size.

"I was a 34A; now I'm a 36C. I'm so excited! I'm telling everyone I know, 'Go ahead, touch them!' Without being an a*****e, I have to say, I love being pregnant."

The 30-year-old star is planning to have a natural birth with Ashton, 36, by her side, but she has already told her beau that he must stay "above the action" when their baby girl starts to make her appearance.

She explained: "Two people are allowed in my delivery room; my doctor and my significant other. And he [Ashton] is staying above the action.

He'll be head to head ... Unless he wants to risk his life and see. But I wouldn't if I were him."

Meanwhile, the brunette beauty got engaged to Ashton earlier this year and she admits the proposal was the "best day" of her life, although she was an emotional wreck.

She recalled: "The best day of my life so far was the proposal. I cried. I was a mess."